单选题 In the last 3^rd paragraph, "The qualifying tests for patents are straightforward--that an idea be useful, novel and not obvious." Here, "obvious" means______.

A、 easily perceived or understood
B、 quite apparent
C、 standing in the way or in front
D、 transparent

【正确答案】 C

【答案解析】[点拨] “obvious”这里是采了英语古语用法(Archaic usage)，结合上下文应当也能做出正确的判断。关键是不能简单地把这个词的普通含义拿来理解文章。这句话的意思是，判断专利是否合资格，其标准是十分明白的——即一个想法须实用、新颖，而且不构成障碍和麻烦。